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Toxicity of Malathion and Parathion to Predators1 of the English Grain Aphid2,3

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The LD50 and/or LC50 values of malathion and parathion for the English grain aphid, Macrosiphum avenae (F.) , and the dominant insect predators in South Dakota (adults and larvae of the convergent lady beetle, Hippodamia covergens Cuerin-Meneville; adults and nymphs of Nabis americoferus Carayon, larvae of Chrysopa Cornea Stephens) indicated that all predators, in general, were less vulnerable to the insecticides than the aphid. The potential for an integrated program to control cereal aphids with selected doses of malathion or parathion thus appears promising.

Document Type: Research Article

Publication date: October 1, 1969

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  • Journal of Economic Entomology is published bimonthly in February, April, June, August, October, and December. The journal publishes articles on the economic significance of insects and is divided into the following sections: apiculture & social insects; arthropods in relation to plant disease; forum; insecticide resistance and resistance management; ecotoxicology; biological and microbial control; ecology and behavior; sampling and biostatistics; household and structural insects; medical entomology; molecular entomology; veterinary entomology; forest entomology; horticultural entomology; field and forage crops, and small grains; stored-product; commodity treatment and quarantine entomology; and plant resistance. In addition to research papers, Journal of Economic Entomology publishes Letters to the Editor, interpretive articles in a Forum section, Short Communications, Rapid Communications, and Book Reviews.
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